code: def _log_messages(self, logger):
      logger.error("error message")
      logger.debug("debug message")
      logger.warning("test %s", "message")
  
file_path: neptune-client/tests/unit/neptune/new/test_log_handler.py
imports: import logging
  import os
  import unittest
  from mock import patch
  from neptune import ANONYMOUS_API_TOKEN, init_run
  from neptune.envs import API_TOKEN_ENV_NAME, PROJECT_ENV_NAME
  from neptune.integrations.python_logger import NeptuneHandler
label_desc: Use image node_id 2 for calling the TestLogHandler obj's underlying member method code with example usage: obj._log_messages(logger) without return types